Ultralight and durable, the LifeStraw weighs less than 2 ounces (46 g) so you can pack it anywhere Long-lasting membrane microfilter lasts up to 1,000 gallons (4,000 L) of water - enough drinking water to last an individual for over 5 years! Be prepared with the ultimate survival tool, the LifeStraw has an unlimited shelf life and has been tested all over the globe to face the harshest conditions.Specifications:- Dimensions: 9 x 1.2 in 22.9 x 2.5 cm- Weight: 1.6 oz 46 g - Includes: LifeStraw, lanyard, user manual